STEVAL-DRONE01を組み立てたので、gdbでデバッグできるか、ST-LINK V2経由で接続してみた。
以下の通り、openOCDを立ち上げて、gdbを起動してポート3333で接続、STM32F401のレジスタダンプ、メモリダンプは行えた。
$ ./bin-x64/openocd.exe -f scripts/interface/stlink-v2.cfg -f scripts/target/stm32f4x.cfg
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "hla_swd". To override u
se 'transport select <transport>'.
Info : The selected transport took over low-level target control. The results mi
ght differ compared to plain JTAG/SWD
adapter speed: 2000 kHz
adapter_nsrst_delay: 100
none separate
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : clock speed 1800 kHz
Info : STLINK v2 JTAG v29 API v2 SWIM v7 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.170428
Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : accepting 'gdb' connection on tcp/3333
Info : device id = 0x00016423
Info : flash size = 256kbytes
undefined debug reason 7 - target needs reset
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
adapter speed: 1800 kHz
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x08012e78 msp: 0x20005368
$ /usr/local/GNUToolsARMEmbedded/4.8_2013q4/bin/arm-none-eabi-gdb.exe GNU gdb (GNU Tools for ARM Embedded Processors) 7.6.0.20131129-cvs Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "--host=i586-mingw32 --target=arm-none-eabi". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. (gdb) target extended-remote : 3333 Remote debugging using : 3333 0x00000000 in ?? () (gdb) mon reset halt Unable to match requested speed 2000 kHz, using 1800 kHz Unable to match requested speed 2000 kHz, using 1800 kHz adapter speed: 1800 kHz target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x08012e78 msp: 0x20005368 (gdb) i r r0 0x0 0 r1 0x0 0 r2 0x0 0 r3 0x0 0 r4 0x0 0 r5 0x0 0 r6 0x0 0 r7 0x0 0 r8 0x0 0 r9 0x0 0 r10 0x0 0 r11 0x0 0 r12 0x0 0 sp 0x0 0x0 lr 0x0 0 pc 0x0 0x0 xPSR 0x0 0 (gdb) cont Continuing. Program received signal SIGINT, Interrupt. 0x08004f78 in ?? () (gdb) i r r0 0x3e8 1000 r1 0x3e8 1000 r2 0x2000 8192 r3 0x2000 8192 r4 0x0 0 r5 0x4 4 r6 0x0 0 r7 0x0 0 r8 0x0 0 r9 0x0 0 r10 0x0 0 r11 0x0 0 r12 0x0 0 sp 0x20005308 0x20005308 lr 0x8004f79 134238073 pc 0x8004f78 0x8004f78 xPSR 0x81000000 -2130706432 (gdb) x/32wx 0 0x0: 0x20005368 0x08012e79 0x08012f31 0x08012f35 0x10: 0x08012f39 0x08012f3d 0x08012f41 0x00000000 0x20: 0x00000000 0x00000000 0x00000000 0x08012f45 0x30: 0x08012f49 0x00000000 0x08012f4d 0x08012689 0x40: 0x08012f51 0x08012f55 0x08012f59 0x08012f5d 0x50: 0x08012f61 0x08012f65 0x08012f69 0x08012f6d 0x60: 0x08012f71 0x08012f75 0x080126e9 0x08012f79 0x70: 0x08012f7d 0x08012f81 0x08012f85 0x08012f89 (gdb)
Flashには何か書き込まれていて走っているようだが、、どうせ使いこなせないし。。別にいらん。
■補足
当初、USBケーブルからSTM32の基板に電源を供給して、ST-LINKはGNDと信号線だけを繋いでいたけど、その状態だと正常に通信が確立できなかった。USBケーブルをはずして、ST-LINKの3.3VとGNDを接続すると通信が正常化した。なぜだろうか。。回路図まだ詳しく見ていないので原因は分からず。
■ご参考URL
STM32F401の仕様書類
https://www.st.com/ja/microcontrollers-microprocessors/stm32f401cc.html
